Counterweight Attachment Device with Tilting Coupling Units
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Solution Overview
Problem
Existing counterweight attachment and removal devices require precise adjustment of the construction machine and counterweight positions for successful coupling, making the operation burdensome for operators.
Innovation Solution
The device includes a pair of coupling units with coupling pieces that can slew and tilt, and a counterweight with tapered protrusions and receiving holes, allowing for coupling and positioning adjustments without precise alignment, enabling the counterweight to be attached to a predetermined position on the construction machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single coupling unit is used, then the device structure is simple, but precise position adjustment is required for successful coupling
Solution Approach 1:
The coupling device is divided into a pair of coupling units instead of a single unit. Each coupling unit can independently slew and tilt, allowing the counterweight to be coupled to the construction machine without requiring precise position adjustment. This segmentation enables each coupling unit to accommodate misalignment independently.
Solution Approach 2:
The coupling units are designed with dynamic adjustment capabilities through slewing and tilting mechanisms. The coupling pieces can rotate around a center axis (slewing) and tilt relative to the center axis, providing real-time positional adaptation during the coupling process. This dynamic flexibility eliminates the need for precise pre-adjustment of positions.
2Ease of manufacture
If the coupling pieces are fixed in position, then the manufacturing is simple, but the counterweight cannot be attached to a predetermined position
Solution Approach 1:
The coupling pieces are designed with slewing and tilting capabilities, transforming them from fixed structures to dynamically adjustable components. Each coupling unit can slew around a center axis and tilt relative to it, enabling the counterweight to be attached to predetermined positions on the construction machine while maintaining relatively simple manufacturing processes.
Solution Approach 2:
The coupling units gain rotational freedom in multiple dimensions through slewing (rotation around center axis) and tilting (rotation relative to center axis). This multi-dimensional movement capability allows the coupling pieces to reach various predetermined positions on the construction machine without requiring complex manufacturing adjustments.
Data Source
AI summary
A counterweight attachment and removal device which can connect lifting assemblies and a counterweight without precisely adjusting the construction machine position and the counterweight position, and which can attach the counterweight to adjust lateral direction. The device (18) includes a link (28) which is connected pivotally to the rear end of the construction machine, and a pair of coupling units (32, 32) which are connected to the leading end of the link (28). Each coupling unit (32) has a pair of coupling pieces (38, 40), a connecting pin (42) and a position adjustment member (44, 45). The coupling pieces (38, 40) extend from the link (28) and are able to tilt and move pivotally around the central axis (O). The connecting pin (42) is detachably connected to the extension ends between the connecting pieces (38, 40). Each adjustment member (44, 45) is disposed on the inner surface of the connecting piece (38, 40).